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Cash and Due from Banks Cash and Due from Banks (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash and Cash Equivalents [Line Items]      
Restricted Cash and Cash Equivalents, Current $ 14,564,000 $ 8,944,000 $ 16,643,000
Cash, Uninsured Amount $ 1,906,000